.panel {
    border: solid 3px grey;
    border-radius: 10px;
    width: 450px;
    height: 470px;
    padding: 10px;
    margin: 50px auto;
}

.map {
    background: gray;
    border: 1px solid grey;
    position: relative;
    margin: 10px auto;
    width: 416px;
    height: 416px;
    z-index: 1;
    overflow: hidden;
}

.rock {
    width: 32px;
    height: 32px;
    position: absolute;
    background: silver;
    z-index: 2;
}

.stick{
    width: 32px;
    height: 32px;
    position: absolute;
    background: brown;
    z-index: 2;
}

.grass{
    width: 32px;
    height: 32px;
    position: absolute;
    background: green;
    z-index: 4;
}

.bomb{
    width: 32px;
    height: 32px;
    position: absolute;
    background: lightblue;
    z-index:2;  
}

.enegy{
    width: 32px;
    height: 32px;
    position: absolute;
    background: orange;
    z-index:2;  
}

.tank {
    background-image: url("tank.gif");
    background-repeat: no-repeat;
    overflow: hidden;
    position: absolute;
    width: 32px;
    height: 32px;
    z-index: 3;
}

.enemy {
    background-image: url("enemy.png");
    background-repeat: no-repeat;
    overflow: hidden;
    position: absolute;
    width: 32px;
    height: 32px;
    z-index: 3;
}

.bullet {
    background-image: url('bullet.gif');
    width: 8px;
    height: 8px;
    position: absolute;
    z-index: 4;
    background-repeat: no-repeat;
}

.Boom {
    background-image: url('boom.png');
    width: 64px;
    height: 64px;
    position: absolute;
    z-index: 4;
}

#scores {
    width: 400px;
    height: 20px;
    margin: 5px 20px 5px 20px;
    z-index: 5;
    color: red;
    font: bold 16px/1.5em arial;
    text-align: center;
    border: solid 2px grey;
    border-radius: 5px;
}

#scores>span{
    margin:0 10px;
}